A. increases the nucleophilic character of reagent
B. increases electrophilic character of carbonyl compound
C. acidic character of reagent
D. both a and b
0
Which of the following is a symmetrical ketone___________________?
0
Which one exhibits aldol condensation____________________?
A. 3 – hexanone
B. acetone
C. butanone
D. 2-pentanone
0
Acetaldehyele cyanohydrin on acid hydrolysis yields___________________?
A. HCHO
B. C6H5CHO
C. Cl3CCHO
D. CH3COCH3
0
Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
A. Tartaric acid
B. Propanoic acid
C. Lactic acid
D. Valeric acid
0
Aldehyde and ketone have same general formula for homologous series_________________?
A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2
0
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
A. CnH2nO2n
B. CnH2n
C. CnH2nO
D. CnH2nOn+1
0
Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?
A. pink
B. black
C. yellow
D. brick red
0
Formula of haloform is_________________?
A. 60%
B. 50%
C. 52%
D. 8%
0
Formaldehyde and lactose are combined to produce throat lozenges named as__________________?
A. HCOX
B. CX4
C. CHX3
D. CH3X
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